<div class="container">
  <div class="row">
    <div class="col-10 ">
      <h1 ></h1>
    </div>
    <div class="col-1">
      <button mat-button [matMenuTriggerFor]="menu" >菜单</button>
      <mat-menu #menu="matMenu">
        <button mat-menu-item (click)='home()'>主页</button>
        <button mat-menu-item (click)='shoppingCart()'>购物车</button>
      </mat-menu>
    </div>
    <div class="col-1">
	    <button mat-button (click)='logout()'>注销</button>
    </div>
  </div>

</div>